Cary, Joyce
London Longmans 1946
Buku Teks
Legum, Colin, author
Frederick A. Praeger, 1964
Buku Teks
edited by Michael M. Horowitz and Thomas M. Painter
Westview Press, 1986
Buku Teks
John Doling, Roziah Omar
Ashgate, 2000
Buku Teks
Delavignette, Robert Louis
Oxford University Press, 1950
Buku Teks